Joshua Schlieder Browse All Authors Famous Quotes by Joshua Schlieder MARS MAY HAVE HOSTED LIFE EARLIER THAN EARTH DID, STUDY SAYS Joshua Schlieder, a co-author of the study and an astrophysicist at NASA Goddard, said that not all planets that orbit stars are identical, highlighting the differences between Earth and Venus. We still have many questions about why Earth became habitable and Venus did not. Joshua Schlieder science
